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    • 2. 发明授权
    • X-ray CT device and method of imaging using the same
    • X射线CT装置及其成像方法
    • US07826586B2
    • 2010-11-02
    • US12200240
    • 2008-08-28
    • Tadahiro NakayamaKazunobu NagaiAkiyuki YokoyamaIsamu NittaMasato NagataToyomasa HondaHidetoshi Kudo
    • Tadahiro NakayamaKazunobu NagaiAkiyuki YokoyamaIsamu NittaMasato NagataToyomasa HondaHidetoshi Kudo
    • H05G1/00H05G1/10
    • A61B6/56A61B6/035A61B6/4488H05G1/10
    • An X-ray CT device including a stationary part; a rotary part rotatable relative to the stationary part; an X-ray tube provided at the rotary part for radiating X-ray beams on an object; an X-ray detector provided at the rotary part opposing the X-ray tube, and that detects the X-ray beams passed through the object; an image processor that generates cross-sectional images of the object based on a detection signal outputted from the X-ray detector; a display that shows the cross-sectional images based on output signals delivered from the image processor; a first transmitting section configured by a rotary step-up transformer having a primary and secondary windings residing at the stationary and the rotary part respectively, and that steps up AC voltage provided by AC power source, and that further executes non-contact power transmission from the stationary part to the rotary part for supplying power to the X-ray tube.
    • 一种X射线CT装置,包括固定部分; 旋转部分,其相对于所述静止部分可旋转; 设置在所述旋转部上用于在物体上照射X射线束的X射线管; X射线检测器,设置在与X射线管相对的旋转部,并检测穿过物体的X射线束; 图像处理器,其基于从所述X射线检测器输出的检测信号生成所述物体的截面图像; 显示器,其基于从图像处理器传送的输出信号显示横截面图像; 第一发送部分由具有分别位于静止和旋转部分的初级和次级绕组的旋转升压变压器构成,并且升高由AC电源提供的AC电压,并且进一步执行非接触式电力传输 该静止部分连接到用于向X射线管供电的旋转部分。
    • 3. 发明授权
    • Motor control device, motor drive system, washing machine, air conditioner and method of changing magnetization amount of permanent magnet motor
    • 电动机控制装置,电动机驱动系统,洗衣机,空调及永磁电动机磁化量变化方法
    • US08129931B2
    • 2012-03-06
    • US12428840
    • 2009-04-23
    • Sari MaekawaKazunobu NagaiIsamu Nitta
    • Sari MaekawaKazunobu NagaiIsamu Nitta
    • H02P21/00
    • H02P21/14
    • A motor control device includes a magnetization control unit energizing a motor winding to change magnetic flux content of permanent magnet motor, a current detector detecting current supplied to the motor, a vector control unit including a speed/position estimation unit carrying out an operation to estimate a motor rotational speed and rotational position, the vector control unit carrying out a vector control of the motor, an induced voltage detector detecting an induced voltage of the motor based on the rotational speed, motor currents obtained by the vector control unit, output voltages of the drive unit, a winding inductance or the motor constant and a winding resistance, an induced voltage command determining unit determining an induced voltage command based on the motor rotational speed and output torque, and a magnetization current determining unit determining an amount of energization based on the induced voltage of the motor and the induced voltage command.
    • 一种电动机控制装置,包括对电动机绕组通电以改变永磁电动机的磁通量的磁化控制装置,电流检测器检测供给电动机的电流;矢量控制单元,包括执行估计的操作的速度/位置估计单元 马达旋转速度和旋转位置,矢量控制单元执行马达的矢量控制,感测电压检测器,基于转速检测马达的感应电压,由矢量控制单元获得的马达电流,输出电压 驱动单元,绕组电感或电动机常数和绕组电阻,感应电压指令确定单元,基于电动机转速和输出转矩来确定感应电压指令;以及磁化电流确定单元,其基于 电机的感应电压和感应电压指令。
    • 4. 发明授权
    • Washing machine with improved drive structure for rotatable tub and
agitator
    • 洗衣机具有改进的旋转桶和搅拌器的驱动结构
    • US5778703A
    • 1998-07-14
    • US773681
    • 1996-12-24
    • Masahiro ImaiHiroshi NishimuraMasaru KoshimizuKoichi HosomiKazunobu NagaiIsamu NittaYutaka Inagaki
    • Masahiro ImaiHiroshi NishimuraMasaru KoshimizuKoichi HosomiKazunobu NagaiIsamu NittaYutaka Inagaki
    • D06F37/30D06F37/40H02P3/04
    • D06F37/40D06F37/304
    • A washing machine includes a hollow tub shaft mounted on a first stationary portion of the machine for rotation, a rotatable tub rotatably mounted on an upper end of the tub shaft, an agitator shaft concentrically inserted in the tub shaft for rotation, an agitator mounted on the upper end of the agitator shaft, a stator fixed to a second stationary portion of the machine to be concentric with the agitator shaft to constitute an electric motor together with the stator, and a clutch including a holder mounted on the tub shaft for rotation with the tub shaft. The clutch further includes a first engagement portion formed in a third stationary portion of the machine, a second engagement portion formed in the rotor, a lever mounted on the holder to be selectively engaged with one of the first and second engagement portions, the lever operatively coupling the rotor to the agitator shaft when engaged with the first engagement portion, the lever operatively coupling the rotor to both of the agitator and tub shafts when engaged with the second engagement portion, and toggle type springs holding the lever in engagement with the first and second engagement portions respectively.
    • 洗衣机包括安装在机器的第一静止部分上以便旋转的中空桶轴,可旋转地安装在桶筒的上端的可旋转桶,同心地插入桶筒中以便旋转的搅拌器轴,搅拌器安装在 搅拌器轴的上端,定子固定到机器的第二静止部分以与搅拌器轴同心以与定子一起构成电动机;以及离合器,其包括安装在桶轴上的保持架,用于与 浴缸轴。 离合器还包括形成在机器的第三静止部分中的第一接合部分,形成在转子中的第二接合部分,安装在保持器上的杠杆,以选择性地与第一和第二接合部分中的一个接合,杠杆可操作地 当与第一接合部分接合时,将转子耦合到搅拌器轴,当与第二接合部分接合时,杠杆可操作地将转子连接到搅拌器和水槽轴;以及肘节式弹簧,其保持杆与第一和第二接合部分接合, 第二接合部。
    • 5. 发明申请
    • MOTOR CONTROL DEVICE, MOTOR DRIVE SYSTEM, WASHING MACHINE, AIR CONDITIONER AND METHOD OF CHANGING MAGNETIZATION AMOUNT OF PERMANENT MAGNET MOTOR
    • 电机控制装置,电动机驱动系统,洗衣机,空调机及更换永磁电机的磁化量的方法
    • US20090267546A1
    • 2009-10-29
    • US12428840
    • 2009-04-23
    • Sari MaekawaKazunobu NagaiIsamu Nitta
    • Sari MaekawaKazunobu NagaiIsamu Nitta
    • H02P21/14
    • H02P21/14
    • A motor control device includes a magnetization control unit energizing a motor winding to change magnetic flux content of permanent magnet motor, a current detector detecting current supplied to the motor, a vector control unit including a speed/position estimation unit carrying out an operation to estimate a motor rotational speed and rotational position, the vector control unit carrying out a vector control of the motor, an induced voltage detector detecting an induced voltage of the motor based on the rotational speed, motor currents obtained by the vector control unit, output voltages of the drive unit, a winding inductance or the motor constant and a winding resistance, an induced voltage command determining unit determining an induced voltage command based on the motor rotational speed and output torque, and a magnetization current determining unit determining an amount of energization based on the induced voltage of the motor and the induced voltage command.
    • 一种电动机控制装置,包括对电动机绕组通电以改变永磁电动机的磁通量的磁化控制装置,电流检测器检测供给电动机的电流;矢量控制单元,包括执行估计的操作的速度/位置估计单元 马达旋转速度和旋转位置,矢量控制单元执行马达的矢量控制,感测电压检测器,基于转速检测马达的感应电压,由矢量控制单元获得的马达电流,输出电压 驱动单元,绕组电感或电动机常数和绕组电阻,感应电压指令确定单元,基于电动机转速和输出转矩来确定感应电压指令;以及磁化电流确定单元,其基于 电机的感应电压和感应电压指令。
    • 8. 发明授权
    • Permanent magnet motor and washing machine provided therewith
    • 提供永磁电动机和洗衣机
    • US07250703B2
    • 2007-07-31
    • US11284924
    • 2005-11-23
    • Isamu NittaMinoru Awazu
    • Isamu NittaMinoru Awazu
    • H02K21/12H02K1/17
    • D06F37/304H02K1/2786
    • A permanent magnet motor includes a rotor core having magnetic pole faces including first to third faces. The first face is formed on a peripherally central part and has a peripherally uniform width of the gap. Each of the second and third faces is formed on both peripheral ends respectively and has a width of a gap rendered larger as each of the second and third faces comes close to a boundary between magnetic poles. The first face ranges from ±15 degrees to ±35 degrees in electrical angle about a center of the magnetic pole and has such a circular arc shape that the gap width is increased by about 10% relative to a minimum gap width.
    • 永磁电动机包括具有包括第一至第三面的磁极面的转子芯。 第一面形成在外围中心部分上并且具有间隙的周向均匀的宽度。 第二面和第三面各自分别形成在两个外周端上,并且当第二和第三面中的每一个都接近磁极之间的边界时,其间隙变宽的宽度。 第一面在电磁角度围绕磁极的中心为±15度至±35度,并具有相对于最小间隙宽度使间隙宽度增加约10%的圆弧形状。
    • 9. 发明申请
    • WASHING MACHINE
    • 洗衣机
    • US20100307201A1
    • 2010-12-09
    • US12741524
    • 2008-11-04
    • Tsuyoshi ShigaIsamu Nitta
    • Tsuyoshi ShigaIsamu Nitta
    • D06F23/00
    • D06F37/30D06F37/304D06F37/306D06F37/36H02K1/2786Y02B40/52
    • A washing machine has a water tank and a motor for rotationally driving a load received in the water tank and performs a washing operation including a washing process, a rinsing process, and dewatering process. The motor has a stator and a rotor. The stator has a stator coil, and the rotor has a rotor magnet including a first magnet and a second magnet. The first magnet has a permanent magnet having a high coercive force, and the second magnet has a permanent magnet having a lower coercive force than the first magnet and generating easily changeable magnetic flux. In the washing process of the washing operation, the second magnet is magnetized so that the magnetic flux of the rotor magnet acting on the stator increases, and in the dewatering process, the second magnet is magnetized so that the magnetic flux acting on the stator decreases from the level in the washing process.
    • 洗衣机具有水箱和电动机,用于旋转地驱动接收在水箱中的负载,并执行包括洗涤过程,漂洗处理和脱水处理的洗涤操作。 电机具有定子和转子。 定子具有定子线圈,转子具有包括第一磁体和第二磁体的转子磁体。 第一磁体具有矫顽力高的永磁体,第二磁体具有比第一磁体低的矫顽力的永磁体,并产生容易变化的磁通量。 在洗涤操作的洗涤过程中,第二磁体被磁化,使得作用在定子上的转子磁体的磁通增加,并且在脱水过程中,第二磁体被磁化,使得作用在定子上的磁通减少 从洗涤过程的水平。
    • 10. 发明授权
    • Washing machine
    • 洗衣机
    • US08739581B2
    • 2014-06-03
    • US12741524
    • 2008-11-04
    • Tsuyoshi ShigaIsamu Nitta
    • Tsuyoshi ShigaIsamu Nitta
    • D06F37/00D06F37/30D06F37/36H02K21/00
    • D06F37/30D06F37/304D06F37/306D06F37/36H02K1/2786Y02B40/52
    • A washing machine includes a water tub, an electric motor, and a control device. The motor comprises a stator including a stator coil, a rotor magnet arranged circumferentially with respect to the rotor, and a control device. The rotor magnet includes a permanent magnet. When the control device applies a first voltage to the stator coil in a wash step of the washing operation, the rotor magnet is magnetized so that a magnetic flux of the rotor magnet acting on the stator is increased without reversal of a direction of magnetization. When the control device applies a second voltage to the stator soil in a dehydration step of the washing operation, the rotor magnet is magnetized so that a magnetic flux of the rotor magnet acting on the stator is reduced without reversal of a direction of magnetization as compared with the magnetic flux in the wash step.
    • 洗衣机包括水桶,电动马达和控制装置。 电动机包括定子,其包括定子线圈,相对于转子周向设置的转子磁体和控制装置。 转子磁体包括永磁体。 当控制装置在洗涤操作的洗涤步骤中向定子线圈施加第一电压时,转子磁体被磁化,使得作用在定子上的转子磁体的磁通量增加而不会反转磁化方向。 当控制装置在洗涤操作的脱水步骤中向定子土施加第二电压时,转子磁体被磁化,使得作用在定子上的转子磁体的磁通量相对于磁化方向反转而减小 在洗涤步骤中磁通量。